Automatic telecommunication systems



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Nov. 15, 1960 F. H. BRAY ET AL AUTOMATIC TELECOMMUNICATION SYSTEMS Filed Sept. 28, 1954 29 Sheets-Sheet l @can Distrib.

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Inventors E H, B R A Y R. G

.KNIGHT- G. CHART LE Y BWM;

A ttorn e y Nov. 15, 1960 F. H. BRAY ETAL 2,960,575

AUTOMATIC TELECOMMUNICATION SYSTEMS Filed Sept. 28, 1954 29 Shets5heet 2 A ttorne y Nov. 15, 1960 F. H. BRAY E'rAL 2,960,575

AUTOMATIC TELECOMMUNICATION SYSTEMS Filed Sept. 28, 1954 29 Sheets-Sheet 3 [W- n ttorney Nov. 15, 1960 F. H. BRAY ETAL 2,960,575

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75 Meier/)7g fL/flomenl Inventors F- H. BRAY R. G. K N 1G HT* G. CHARTLEY 6b/7 Attorney Nov. 15, 1960 F. H. BRAY ETAL AUTOMATIC TELECOMMUNICATION SYSTEMS 29 Sheets-Sheet 5 +vEPu/ses A Home y Nov. 15, 1960 F. H. BRAY ErAL 2,960,575

AUTOMATIC TELECOMMUNICATION SYSTEMS Filed sept. 2a, 1954 29 sheets-sheet s A ttarney Nov. l5, 1960 F. H. BRAY ETAL AUTOMATIC TELECOMMUNICATION SYSTEMS 29 Sheets-Sheet 8 Filed Sept. 28, 1954 Mw TI T' TRI? Nov. 15, 1960 AUTOMATIC TELECOMMUNICATION SYSTEMS 29 Sheets-Sheet 9 Filed Sept. 28, 1954 F. H. BRAY ETAL Attorney Nov. 15, 1960 F. H. BRAY ETAL 2,960,575

AUTOMATIC TELECOMMUNICATION SYSTEMS Filed Sept. 28, 1954 29 Sheets-Sheet 10 G. C. HARTLEY Horn e y Nov. 15, 1960 F. H. BRAY ETAL 2,960,575

AUTOMATIC TELECOMMUNICATION SYSTEMS Filed Sept. 28, 1954 29 Sheets-Sheet 1l A ttorne y Nov. 15, 1960 F. H. BRAY Erm. 2,960,575

AUTOMATIC TELEcoMMuNIcA'rIoN SYSTEMS Filed sept. 2s, 1954 29 sheets-sheet 12 fia/P35 A ttarn ey Nov. 15, 1960 Filed Sept. 28, 1954 F. H. BRAY EIAL WMM/- A ttorney Nov. 15, 1960 F. H. BRAY ETAL 2,960,575 AUTOMATIC TELE'coMMuNIcATToN sYsTEMs Filed Sept. 28, 1954 29 Sheets-Sheet 14 Nov. 15, 1960 F. H. BRAY l-.TAL

AUTOMATIC TELEcoMMuNIcATIoN SYSTEMS 29 Sheets-Sheetl 15 Filed Sept. 28, 1954 nl l Inventors F. l-LBRAY R. G. K NIGHT- G.C.HARTLE Y By Atme Nov. 15, 1960 F. H. BRAY ErAL 2,950,5'35

AUTOMATIC TELECOMMUNICATION SYSTEMS Filed Sept. 28, 1954 29 ShetS-Sheet 16 A Horn ey Nov. 15, 1960 F. H, BRAY ETAL 2,960,575

AUTOMATIC TELECOMMUNICATION SYSTEMS Filed Sept. 28, 1954 29 Sheets-Sheet 17 'X1 7b Peg/sters o PDM/8 (246) I? Loca/ PCD i F/g /7 Inventors F. H. BRAY- R. G.K N )Gl-IT- G C, HARTLEY By Aitor ey Nov. 15, 1960 H. BRAY EVAL AUTOMATIC TELECOMMUNICATION SYSTEMS Filed Sept. 28, 1954 29 Sheets-Sheet 18 Attorney Nov. 15, 1960 F. H. BRAY ErAL AUTOMATIC TELECOMMUNICATION SYSTEMS 29 Sheets-Sheet 19 Filed Sept. 28, 1954 2 7b Group Selectors Graden' Out/@ts of level 2 for zS-'Tgo/anao/"q- Purposes l/t/ets v'om Mu/t/p/ec/ yGroup of Selectors o. QHARTLEY By Nov. 15, 1960 F. H. BRAY ErAL 2,960,575

AUTOMATIC TELECOMMUNICATION SYSTEMS Filed Sept. 28, 1954 29 Sheets-Sheet 20 ttorney 

